Hinge Property Editor | Limits | Motor
Sets the options for the hinge constraint to determine its behavior in a rigid body simulation. Hinge constraints make connected
rigid bodies move around an axis that acts as a hinge joint; that is, it provides only one degree of freedom in rotation.
Choose or from the Simulate menu. Then pick the location for the constraint object and the rigid bodies to be constrained.
: Select the hinge constraint object and press Enter.
For more information on constraints in general, see Types of Rigid Body Constraints [ Simulation].
Constraint
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Toggles the activeness of the constraint. Deselect this option to mute the constraint, which prevents it from affecting the
simulation.
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Toggles the display of the constraint object in a view. Deselect this option to hide the constraint object.
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Toggles the collision state of rigid bodies that are attached together by this constraint. For example, if you don't want
a forearm to collide with a biceps, deselect this option.
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Parameters
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The constant that determines the strength of the torsional spring (the spring coefficient in Hooke's law). Kp is multiplied
by the angular displacement of the hinge from its rest angle (in radians) to determine the force exerted on each rigid body.
The units are based on Newtons per meter.
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Reduces the velocity of the constrained object. Kd is the damping coefficient, which is multiplied by the rigid bodies' mutual
velocity to determine the damping force (which acts in the opposite direction as the ). The units are in Newtons per meter per second.
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The angle (in degrees) which the hinge tries to return to during the simulation (its rest state).
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Feedback
These parameters are for informational purpose only: you cannot modify them.
Limits
Restricts the range of movement allowed for the hinge:
Minimum Angle
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Toggles the activeness of the limit. When you activate limits, a red icon appears at the center of the hinge to show you the current range of movement.
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The lowest angle in the range of movement at which the hinge stops; that is, it cannot go below this value. This value (in
degrees) must be lower than the Maximum Angle value. A value of 0 corresponds to the constraint's initial state orientation.
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Maximum Angle
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Toggles the activeness of the limit. When you activate limits, a red icon appears at the center of the hinge to show you the current range of movement.
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The highest angle in the range of movement at which the hinge stops; that is, it cannot go above this value. This value (in
degrees) must be higher than the Minimum Angle value. A value of 0 corresponds to the constraint's initial state orientation.
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Motor
A motor applies a torque (force) to a constraint to get it to move at a desired speed (velocity). The motor only works with
two rigid bodies used in the constraint relationship.
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Toggles the activeness of the motor.
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Power
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The maximum amount of velocity that the motor can generate.
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The maximum amount of force that can be applied to the constrained object.
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